CN107165998A - Transmission component, pump housing mechanism and high pressure pump - Google Patents
Transmission component, pump housing mechanism and high pressure pump Download PDFInfo
- Publication number
- CN107165998A CN107165998A CN201710463714.XA CN201710463714A CN107165998A CN 107165998 A CN107165998 A CN 107165998A CN 201710463714 A CN201710463714 A CN 201710463714A CN 107165998 A CN107165998 A CN 107165998A
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- cam
- pump head
- pump
- valve base
- transfusion
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- 230000007246 mechanism Effects 0.000 title claims abstract description 161
- 230000005540 biological transmission Effects 0.000 title claims abstract description 69
- 239000007788 liquid Substances 0.000 claims description 74
- 238000007789 sealing Methods 0.000 claims description 41
- 229910001220 stainless steel Inorganic materials 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- 239000004809 Teflon Substances 0.000 claims description 5
- 229920006362 Teflon® Polymers 0.000 claims description 5
- 229910052593 corundum Inorganic materials 0.000 claims description 5
- 239000010431 corundum Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000009530 blood pressure measurement Methods 0.000 claims description 3
- 238000004080 punching Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000001727 in vivo Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000005213 imbibition Methods 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000001802 infusion Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000009329 sexual behaviour Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009509 drug development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
- F16H25/08—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion
- F16H25/14—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with reciprocation perpendicular to the axis of rotation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
- F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
- F16H53/025—Single-track cams for single-revolution cycles; Camshafts with such cams characterised by their construction, e.g. assembling or manufacturing features
Abstract
The present invention relates to transmission component, pump housing mechanism and high pressure pump, transmission component includes being set with straight pin on power transmission shaft, the first cam, the second cam, clutch shaft bearing, second bearing and big belt wheel, power transmission shaft；First cam and the second cam are fixedly set on power transmission shaft, and the first cam and the second cam are respectively at the two ends of straight pin；Clutch shaft bearing and second bearing are sleeved on power transmission shaft, and clutch shaft bearing is in the one end of the first cam away from straight pin, and second bearing is in the one end of the second cam away from straight pin；Big belt wheel is fixedly set on power transmission shaft, and in side of the second bearing away from the second cam；Power transmission shaft is also set with split washer and axle pad piece, and split washer and axle pad piece are in side of the clutch shaft bearing away from the first cam；Power transmission shaft drives the first cam and the second cam rotation.Compared with the prior art, the present invention simplifies structure, weakens vibrations, reduces volume.
Description
Technical field
The present invention relates to high performance liquid chromatograph technical field, more particularly to a kind of transmission component, pump housing mechanism and high pressure
Infusion pump.
Background technology
High performance liquid chromatography (HPLC) is widely used in organic chemistry, biochemistry, medical science, drug development and detection, change
Separation and detection in terms of work, Food Science, environmental monitoring, commodity inspection and method inspection.High pressure pump is that liquid chromatograph is contour
Press one of part very crucial in precision instrument system.Its automatic sampler for being mainly used in high performance liquid chromatograph was sampled
Cheng Zhong, is accurately controlled sample volume to be sent in chromatographic system, course of conveying by high pressure pump and keeps constant flow velocity, ultralow
Pulse and high-precision flow, the stability of infusion pump is directly connected to the repeatability and accuracy of analysis result.
Ordinary high pressure infusion pump is main to be made up of power drive, liquid conveying and three parts of regulation control.Power drive is filled
Put past via volume is big, weight weight DC stepper motor driving system of mechanical levers drives fluid conveyor piston or barrier film to realize
Multiple motion, piston or barrier film are sucked fluid draining pump head by trandfer fluid and in second half in the preceding half cycle of stroke, are completed
The absorption and discharge of required liquor sample.
Existing high pressure pump uses DC stepper motor, and high pressure pump is shaken and volume by stepper motor self-operating
Limitation, and mechanical linkage drive system, the pump housing, which need to separately add device to carry out damping and volume, can not realize miniaturization and lightweight.
Secondly as high pressure pump is in infusion process, pulsation is easily produced, existing high pressure pump is typically chosen machine
Tool buffer, its principle be using one section of stainless steel tube, the inside be inserted in can deformation flexible pipe, in the interlayer of flexible pipe and stainless steel tube
Inject after compressible fluid and seal, when pressure oscillation is larger in system, by the deformation of flexible pipe, eliminate pulsation, but due to defeated
Send for the liquid that corrosivity is big, acid-base value is high, easily cause the perishable aging of buffer, become matching somebody with somebody with loss
Part, directly affects infusion pump normal work stability.
The content of the invention
It is an object of the invention to provide a kind of transmission component, pump housing mechanism and high pressure pump, technology to be solved is asked
Topic is：High pressure pump uses DC stepper motor, and high pressure pump is shaken and volumetric constraint by stepper motor self-operating, with
And mechanical linkage drive system, the pump housing, which need to separately add device to carry out damping and volume, can not realize miniaturization and lightweight.
The technical scheme that the present invention solves above-mentioned technical problem is as follows：Transmission component, including power transmission shaft, the first cam,
Straight pin is set with two cams, clutch shaft bearing, second bearing and big belt wheel, the power transmission shaft；First cam and second
Cam is fixedly set on power transmission shaft, and first cam and the second cam are respectively at the two ends of the straight pin；It is described
Clutch shaft bearing and second bearing are sleeved on power transmission shaft, and the clutch shaft bearing is in the one end of the first cam away from straight pin,
The second bearing is in the one end of the second cam away from straight pin；The big belt wheel is fixedly set on the power transmission shaft, and
The side away from the second cam in second bearing；The power transmission shaft is also set with split washer and axle pad piece, the opening gear
Circle and axle pad piece are in side of the clutch shaft bearing away from the first cam；The power transmission shaft drives the first cam and the second cam to turn
It is dynamic.
The beneficial effects of the invention are as follows：First cam and the second cam connect with two sliding blocks in pump case for face respectively
Touch, the first cam and the second cam quick rotation, rotation potential energy is changed into two sliding blocks linear motion kinetic energy；Due to first convex
The lifting curve of wheel and the second cam has fillet surface with backhaul curved surface joining place, but is slided when high speed rotates with two sliding blocks
Contact, so as to promote high pressure pump to transmit liquid, clutch shaft bearing and second bearing are installed in pump assembly, simplify structure,
Weaken vibrations, reduce volume.
On the basis of above-mentioned technical proposal, the present invention can also do following improvement.
Further, the outline curved section of first cam and the second cam is spiral involute, and the first cam
Lift angle, backhaul angle with the second cam are 140 °, and the first cam and the second cam angle degree differ 140 °, described first
The upper lift of cam is twice of lift on the second cam.
Beneficial effect using above-mentioned further scheme is：First cam and the second cam angle degree differ 140 °, and first is convex
The first transfusion mechanism in wheel and two sliding blocks of the second cam driven, two sliding blocks movement driven pump head mechanisms and the
Two transfusion mechanisms are reciprocating, alternately to infuse, and the first transfusion mechanism and the second transfusion mechanism connection, so as to realize
External imbibition and transfusion, power transmission shaft, which rotates a circle, then completes an imbibition transfusion cycle.
Another technical scheme that the present invention solves above-mentioned technical problem is as follows：Pump housing mechanism, including transmission component, direct current are watched
Motor and pump case are taken, the DC servo motor is placed in the side of the pump case, and the pump case is by connecting plate and directly
Flow servo motor is fixedly connected；The transmission component is placed in pump case, and its big belt wheel is in the outside of pump case；It is described straight
The output shaft of flow servo motor and the big belt wheel of transmission component are connected by timing belt；The transmission component by clutch shaft bearing and
The inwall connection of second bearing and pump case；It is provided with two sliding blocks in the pump case, a pair of two sliding blocks difference 1
The side of the first cam and the second cam is should be at, first cam and the second cam drive its corresponding sliding block to move respectively
It is dynamic.
The beneficial effects of the invention are as follows：DC servo motor drives big belt wheel to be rotated by timing belt, big belt wheel band
Dynamic transmission component is rotated, and the first cam and the second cam on transmission component drive its corresponding sliding block movement respectively, and direct current is watched
Take motor output shaft and transmission component big belt wheel distance it is short as much as possible, and ensure the output shaft of DC servo motor and big
Belt wheel is on same mounting plane, two sliding blocks short extension elongation as far as possible；Decoder is provided with DC servo motor, profit
Rotating speed is precisely controlled with decoder, constant output moment of torsion shakes small noise low.
Another technical scheme that the present invention solves above-mentioned technical problem is as follows：High pressure pump, including pump housing mechanism, pump head
Mechanism and cabinet, the pump housing mechanism are placed in the cabinet, and the pump head mechanism is placed in the side of the cabinet, the pump housing
Mechanism is connected with pump head mechanism, and the both sides of the pump case of the correspondence pump housing mechanism are provided with baffle plate in the cabinet, described
The lower end of cabinet correspondence pump case is provided with beam.
The beneficial effects of the invention are as follows：Driving pump head mechanism of pump housing mechanism is operated, transmission efficiency；Baffle plate can be to pump
Body mechanism progress is spacing, while pump housing mechanism vibrations can be reduced；Beam also can effectively weaken the vibrations of pump housing mechanism；Pump head machine
Structure is separately provided, and can change different pump head mechanisms, according to setting the sampling different in flow rate for completing different volumes, and according to giving
The corrosion-resistant high pump head mechanism of sample liquid body corrosion Sexual behavior mode, lifts the stability of operation.
Further, the pump head mechanism includes being provided with the preceding pump head of inner chamber, is provided with the rear pump head of perforation and in hollow
The fixed column of shape, the preceding pump head, rear pump head and fixed column are sequentially connected, and the one end of the fixed column away from the rear pump head is consolidated
Surely it is provided with the stator of tape punching；Arranged side by side the is provided with the assembly of the preceding pump head, rear pump head and fixed column composition
One transfusion mechanism and second transfusion mechanism, it is described first transfusion mechanism and second transfusion mechanism through stator respectively with pump housing machine
Two sliding blocks of structure connect one to one；The first transfusion mechanism is connected with the second transfusion mechanism by upper connecting tube.
Beneficial effect using above-mentioned further scheme is：Two sliding blocks of pump housing mechanism drive the first transfusion mechanism respectively
Operated with the second transfusion mechanism, the first transfusion mechanism access liquid transmits liquid to the second transfusion machine by upper connecting tube
Structure, the second transfusion mechanism is exported liquid, and the first transfusion mechanism and the second transfusion mechanism are alternately moved back and forth, and are lifted
The stabilization of transfusion；The first transfusion mechanism and the second transfusion mechanism can reduce the volume of pump head mechanism simultaneously, more existing and be coupled
Few two check valves of structure, effectively reduce the volume of pump head component.
Further, it is described first transfusion mechanism with second transfusion mechanism structure it is consistent, including pump head core, upper valve base, under
Valve seat and fixed cover, the pump head core are fixed in front pump head, and the pump head core is close to the rear pump head, the pump head in-core
Liquid storage cylinder is provided with, with pump head in-core in the upper end of pump head before the upper valve base is placed in, and the preceding pump head of its underpart insertion downwards
Liquid storage cylinder is connected；The lower end of pump head before the lower valve base is placed in, and the embedded preceding interior storage with pump head in-core of pump head upwards of its top
Sap cavity is connected；Check valve is provided with the upper valve base and lower valve base；The fixed cover is in fixed column；The fixed cover
On be set with spring in compression shape, one end of the spring is stretched into be connected in rear pump head by tabletting with the inwall of rear pump head,
The other end is close to the outer shroud of the fixed cover, and fixed cover described in the spring compression is close to stator；Set in the fixed cover
There is plunger, the one end of the plunger is stretched into the liquid storage cylinder of pump head core through tabletting and the perforation of rear pump head, its other end
It is connected through stator with sliding block；The upper end of its perforation of rear pump head correspondence is provided with rear washing pipe, the rear washing pipe and rear pump
The perforation connection of head.
Beneficial effect using above-mentioned further scheme is：First transfusion mechanism and the second transfusion mechanism constitute double plunger string
Connection formula reciprocating pump structure, few two check valves of more existing parallel-connection structure, effectively reduces the volume of pump housing mechanism, and then will have list
Fault rate reduction by 50% caused by valve failure.
Further, the pump head core is fixedly installed the first sealing ring, the second sealing ring and pad successively at rear pump head
Piece；Set in the perforation of the rear pump head and be fixed with sealing gasket, the sealing gasket is close to the tabletting, and the end of the plunger is worn
Tabletting successively, sealing gasket, pad, the second sealing ring and the first sealing ring is crossed to stretch into the liquid storage cylinder of pump head core；The preceding pump head
Junction between rear pump head is provided with O-ring.
Beneficial effect using above-mentioned further scheme is：First sealing ring, the second sealing ring and pad can make plunger
End is stretched into liquid storage cylinder, moreover it is possible to which liquid storage cylinder is sealed, and prevents liquid leakage, lifting liquid transmit to stability；It is close
Packing can be sealed to the perforation of rear pump head, lift the sealing of perforation；O-ring can further to preceding pump head and rear pump head it
Between junction sealed, lift-off seal.
Further, the pump head core, upper valve base, lower valve base, plunger are made of stainless steel, and the plunger pass through it is artificial
Corundum processing；First sealing ring, the second sealing ring and O-ring are made of Teflon material.
Beneficial effect using above-mentioned further scheme is：Pump head core, upper valve base, lower valve base, plunger are by stainless steel
Into, the first sealing ring, the second sealing ring and O-ring are made of Teflon material, Neng Shi pump housings mechanism it is high pressure resistant and
It is corrosion-resistant；Plunger is handled by artificial corundum, improves wearability.
Further, the upper valve base of the first transfusion mechanism and the upper valve base of the described second transfusion mechanism are connected by upper connecting tube
Logical, the upper valve base of the first transfusion mechanism and the second transfusion mechanism is fixed by hollow bolt and pressure ring with upper connecting tube to be connected
Connect, liquid is accessed by the lower valve base of the described first transfusion mechanism.
Beneficial effect using above-mentioned further scheme is：Upper connecting tube is fixedly connected on by hollow bolt and pressure ring
The upper valve base of one transfusion mechanism and the upper valve base of the described second transfusion mechanism, lift the stability of connection.
Further, the pressure sensor device that pressure measurement is carried out to liquid is provided with the side wall of the cabinet, the pressure is passed
Induction device is connected with the lower valve base of the described second transfusion mechanism by lower linking tube, is provided with the pressure sensor device to liquid
Carry out the dump valve of cascading water.
Beneficial effect using above-mentioned further scheme is：Pressure sensor device is easy to enter the liquid that pump head mechanism is exported
Row pressure sensitive, be easy to user to understand the pressure of liquid in time, can also be by dump valve to being transmitted in pressure sensor device
Liquid carries out cascading water, lifts convenience.
Brief description of the drawings
Fig. 1 is the front view of transmission component of the present invention；
Fig. 2 is the structural representation of the first cam of the invention and the second cam；
Fig. 3 is Fig. 2 AA sectional views；
Fig. 4 is the top view of pump housing mechanism of the present invention；
Fig. 5 is Fig. 4 side view；
Fig. 6 is the front view of high pressure pump；
Fig. 7 is the structural representation of high pressure pump；
Fig. 8 is Fig. 7 side view；
Fig. 9 is the front view of pump head mechanism；
Figure 10 is the structural representation of pump head mechanism.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, pump housing mechanism, 101, transmission component, 102, DC servo motor, 103, pump case, 104, sliding block, 105, transmission
Axle, the 106, first cam, the 107, second cam, 108, clutch shaft bearing, 109, second bearing, 110, big belt wheel, 111, straight pin,
112nd, split washer, 113, axle pad piece；
2nd, pump head mechanism, 201, preceding pump head, 202, rear pump head, 203, fixed column, 204, stator, the 205, first transfusion machine
Structure, 206, upper connecting tube, 207, pump head core, 208, upper valve base, 209, lower valve base, 210, fixed cover, 211, liquid storage cylinder, 212, unidirectional
Valve, 213, spring, 214, tabletting, 215, plunger, 216, rear washing pipe, the 217, first sealing ring, the 218, second sealing ring, 219, pad
Piece, 220, sealing gasket, 221, hollow bolt, 222, pressure ring, 223, O-ring；
3rd, cabinet, 301, baffle plate, 302, beam；4th, pressure sensor device, 401, lower linking tube.
Embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the present invention.
As shown in figure 1, transmission component, including power transmission shaft 105, the first cam 106, the second cam 107, clutch shaft bearing 108,
Straight pin 111 is set with second bearing 109 and big belt wheel 110, the power transmission shaft 105；First cam 106 and second is convex
107 equal fixed covers 210 are taken turns on power transmission shaft 105, the cam 107 of the first cam 106 and second is respectively at the cylinder
The two ends of pin 111；The clutch shaft bearing 108 and second bearing 109 are sleeved on power transmission shaft 105, at the clutch shaft bearing 108
In first one end of cam 106 away from straight pin 111, the second bearing 109 is in the second cam 107 away from straight pin 111
One end；The fixed cover 210 of big belt wheel 110 is on the power transmission shaft 105, and it is convex away from second to be in second bearing 109
The side of wheel 107；The power transmission shaft 105 is also set with split washer 112 and axle pad piece 113, the split washer 112 and axle pad
Piece 113 is in side of the clutch shaft bearing 108 away from the first cam 106；The power transmission shaft 105 drives the first cam 106 and second
Cam 107 is rotated.
Photoelectricity switch is provided with the connecting plate, the photoelectricity switch is in the side of transmission component 101.
First cam 106 and the second cam 107 are contacted with two sliding blocks 104 in pump case 103 for face respectively, and first is convex
The wheel 106 and quick rotation of the second cam 107, changes into two sliding blocks 104 by rotation potential energy and moves along a straight line kinetic energy；Due to first convex
Lifting curve and the backhaul curved surface joining place of the cam 107 of wheel 106 and second have a fillet surface, but when high speed rotates with two cunnings
The sliding contact of block 104, so as to promote high pressure pump to transmit liquid, clutch shaft bearing 108 and second bearing 109 are installed on pump housing group
In part, simplify structure, weaken vibrations, reduce volume.
In above-described embodiment, as shown in Figures 2 and 3, the foreign steamer contour curved surface of the cam 107 of the first cam 106 and second
Section is spiral involute, and lift angle, the backhaul angle of the first cam 106 and the second cam 107 are 140 °, and first is convex
Wheel 106 and the angle of the second cam 107 differ 140 °, and the upper lift of first cam 106 is two of lift on the second cam 107
Times.
First cam 106 and 140 ° of the angle of the second cam 107 difference, the first cam 106 and the driven of the second cam 107
The first transfusion mechanism of transfusion mechanism 205 and second in two sliding blocks 104, the two movement driven pump head of sliding block 104 mechanisms 2
It is reciprocating, alternately to infuse, and the first transfusion mechanism 205 and second transfusion mechanism connection, so as to realize external suction
Liquid and transfusion, power transmission shaft 105, which rotates a circle, then completes an imbibition transfusion cycle.
Embodiment 2：
As shown in Figure 4 and Figure 5, pump housing mechanism, including transmission component 101, DC servo motor 102 and pump case 103, institute
The side that DC servo motor 102 is placed in the pump case 103 is stated, the pump case 103 passes through connecting plate and DC servo electricity
Machine 102 is fixedly connected；The transmission component 101 is placed in pump case 103, and its big belt wheel 110 is in the outer of pump case 103
Side；The output shaft of the DC servo motor 102 is connected with the big belt wheel 110 of transmission component 101 by timing belt；The transmission
Component 101 is connected by clutch shaft bearing 108 and second bearing 109 with the inwall of pump case 103；Set in the pump case 103
There are two sliding blocks 104, two sliding blocks 104 correspond the side in the first cam 106 and the second cam 107 respectively,
The cam 107 of first cam 106 and second drives its corresponding sliding block 104 to move respectively.
Encoder is provided with DC servo motor 102, the encoder is connected with DC servo motor 102, sliding block 104
For floating slider.
DC servo motor 102 drives big belt wheel 110 to be rotated by timing belt, and big belt wheel 110 drives transmission component
101 rotate, and the first cam 106 and the second cam 107 on transmission component 101 drive its corresponding sliding block 104 to move respectively, directly
The big belt wheel 110 of the output shaft of flow servo motor 102 and transmission component 101 ensures DC servo electricity apart from short as much as possible
The output shaft and big belt wheel 110 of machine 102 are on same mounting plane, two sliding blocks 104 short extension elongation as far as possible；Utilize solution
Code device is precisely controlled the rotating speed of DC servo motor 102, and constant output moment of torsion shakes small noise low.
Embodiment 3：
As shown in Figure 6 to 8, high pressure pump, including pump housing mechanism 1, pump head mechanism 2 and cabinet 3, the pump housing mechanism
1 is placed in the cabinet 3, and the pump head mechanism 2 is placed in the side of the cabinet 3, and the pump housing mechanism 1 and pump head mechanism 2 connect
Connect, the both sides of the pump case 103 of the correspondence pump housing mechanism 1 are provided with baffle plate 301, the correspondence of cabinet 3 in the cabinet 3
The lower end of pump case 103 is provided with beam 302.
Driving pump head mechanism of pump housing mechanism 12 is operated, transmission efficiency；Baffle plate 301 can be limited pump housing mechanism 1
Position, vibrates while pump housing mechanism 1 can be reduced；Beam 302 also can effectively weaken the vibrations of pump housing mechanism 1；Pump head mechanism 2 is independent
Set, different pump head mechanisms 2 can be changed, according to the sampling for setting completion different volumes different in flow rate, and according to sample presentation liquid
The corrosion-resistant high pump head mechanism 2 of body corrosion Sexual behavior mode, lifts the stability of operation.
In above-described embodiment, as shown in Figure 9 and Figure 10, the pump head mechanism 2 include be provided with inner chamber preceding pump head 201,
It is provided with the rear pump head 202 and the fixed column 203 in hollow form of perforation, the preceding pump head 201, rear pump head 202 and fixed column 203
It is sequentially connected, the one end of the fixed column 203 away from the rear pump head 202 is fixedly installed the stator 204 of tape punching；It is described
The first transfusion mechanism 205 and second arranged side by side is provided with the assembly that preceding pump head 201, rear pump head 202 and fixed column 203 are constituted
Infuse mechanism, the transfusion mechanism of the first transfusion mechanism 205 and second passes through respectively with pump housing mechanism 1 two of stator 204
Sliding block 104 connects one to one；The first transfusion mechanism 205 is connected with the second transfusion mechanism by upper connecting tube 206.
Two sliding blocks 104 of pump housing mechanism 1 drive the first transfusion transfusion of mechanism 205 and second mechanism to be operated respectively,
First transfusion mechanism 205 access liquid, liquid is transmitted to the second transfusion mechanism by upper connecting tube 206, the second transfusion mechanism will
Liquid is exported, and the first transfusion transfusion of mechanism 205 and second mechanism is alternately moved back and forth, and lifts the stabilization of transfusion；Together
When the first transfusion transfusion of mechanism 205 and second mechanism can reduce the volume of pump head mechanism 2, few two lists of more existing parallel-connection structure
To valve, the volume of pump head component is effectively reduced.
In above-described embodiment, as shown in Figure 9 and Figure 10, the first transfusion mechanism 205 and second transfusion mechanism structure one
Cause, including pump head core 207, upper valve base 208, lower valve base 209 and fixed cover 210, the pump head core 207, which is fixed, is in front pump head
In 201, the pump head core 207 is close to be provided with liquid storage cylinder 211, the upper valve in the rear pump head 202, the pump head core 207
With the liquid storage cylinder 211 in pump head core 207 in the upper end of pump head 201 before seat 208 is placed in, and the preceding pump head 201 of its underpart insertion downwards
Connection；With pump head core 207 in the lower end of pump head 201 before the lower valve base 209 is placed in, and the upward embedded preceding pump head 201 in its top
Interior liquid storage cylinder 211 is connected；Check valve 212 is provided with the upper valve base 208 and lower valve base 209；At the fixed cover 210
In in fixed column 203；The spring 213 in compression shape is set with the fixed cover 210, after one end of the spring 213 is stretched into
It is connected in pump head 202 by tabletting 214 with the inwall of rear pump head 202, the other end is close to the outer shroud of the fixed cover 210, described
Spring 213 compresses the fixed cover 210 and is close to stator 204；Plunger 215, the plunger are provided with the fixed cover 210
215 one end is stretched into the liquid storage cylinder 211 of pump head core 207 through tabletting 214 and the perforation of rear pump head 202, its other end
It is connected through stator 204 with sliding block 104；The upper end of its perforation of the correspondence of rear pump head 202 is provided with rear washing pipe 216, described
Washing pipe 216 is connected with the perforation of rear pump head 202 afterwards.
Sliding block 104 drives plunger 215 to be moved in fixed cover 210, and the end of plunger 215 puts in liquid storage cylinder 211 or exited,
The outline of the end of plunger 215 and the structure matching of liquid storage cylinder 211；The upper lift of first cam 106 is the second cam
Twice of lift on 107.
When the first cam 106 on transmission component 101 goes to decline journey, the first transfusion mechanism is driven by sliding block 104
205 plunger 215 is retreated by spring 213 to be resetted, and liquid storage cylinder 211 is exited in the end of plunger 215, while the first transfusion mechanism
The check valve 212 of 205 upper valve base 208 is closed, and the check valve 212 of the lower valve base 209 of the first transfusion mechanism 205 is opened,
First transfusion mechanism 205 carries out imbibition by lower valve base 209, and the imbibition volume of the first transfusion mechanism 205 is 2A；
Now the second cam 107 on transmission component 101 goes to lift, and the second transfusion mechanism is driven by sliding block 104
Plunger 215 stretch into liquid storage cylinder 211, the first cam 106 driving plunger 215 stroke be the second cam 107 driving plunger 215
Twice of stroke, the check valve 212 of the upper valve base 208 of the second transfusion mechanism is closed, while the lower valve of the second transfusion mechanism
The check valve 212 of seat 209, which is opened, carries out discharge opeing, and discharge opeing volume is 1A；
When the first cam 106 on transmission component 101 goes to upper lift, the first transfusion mechanism is driven by sliding block 104
205 plunger 215 is stretched into its liquid storage cylinder 211, the check valve 212 of the lower valve base 209 of the first transfusion mechanism 205 is closed, together
When open the check valve 212 of its upper valve base 209 and opened, liquid is transmitted to the second transfusion mechanism by upper connecting tube 206；
Now the second cam 107 on transmission component 101 goes to decline journey, and the second transfusion mechanism is driven by sliding block 104
Plunger 215 retreated and reset by spring 213, liquid storage cylinder 211, the first cam 106 driving plunger are exited in the end of its plunger 215
215 stroke is twice of the second cam 107 driving stroke of plunger 215, the check valve of the upper valve base 208 of the second transfusion mechanism
212 are opened, while the check valve 212 of lower valve base 209 of the second transfusion mechanism is closed, by upper connecting tube 206 by 2A volumes
Liquid introduce second infuse mechanism liquid storage cylinder 211 in；
The first cam 106 and the second cam 107 of transmission component 101 are rotated further by half period, the first transfusion mechanism 205
The check valve 212 of lower valve base 209 is opened, and the first transfusion mechanism 205 carries out imbibition by lower valve base 209, and discharge opeing volume is 2A；The
The check valve 212 of the upper valve base 208 of two transfusion mechanisms is closed, while the check valve of the lower valve base 209 of the second transfusion mechanism
212 open progress discharge opeing, and discharge opeing volume is 1A；Complete a complete imbibition discharge opeing cycle；
After the rotation driving plunger 215 of the second cam 107 sucks 2A volume of liquid, then when rotating progress discharge opeing, it is sucked
1A volume of liquid in 2A volume of liquid is discharged by the check valve 212 of the lower valve base 209 of the second transfusion mechanism, another 1A volumes
Liquid declines journey because the second cam 107 is in, and is temporarily stored in liquid storage cylinder 211, when the first cam 106 rotates to decline journey, opens
During beginning imbibition 2A volumes, the second cam 107 is in upper lift, now discharges the 1A volume of liquid being temporarily stored in liquid storage cylinder 211,
Therefore, this structure can ensure that the pump housing has 1A volume of liquid constant outputs in operation process all the time.
First transfusion mechanism of transfusion mechanism 205 and second constitutes double plunger tandem reciprocating pump structure, more existing parallel connection
Few two check valves of structure, effectively reduce the volume of pump housing mechanism 1, and then will have fault rate reduction caused by one-way valve fault
50%.
In above-described embodiment, as shown in Figure 9 and Figure 10, the pump head core 207 is fixedly installed successively at rear pump head 202
There are the first sealing ring 217, the second sealing ring 218 and pad 219；Set in the perforation of the rear pump head 202 and be fixed with sealing gasket
220, the sealing gasket 220 is close to the tabletting 214, the end of the plunger 215 through tabletting 214 successively, sealing gasket 220,
Pad 219, the second sealing ring 218 and the first sealing ring 217 are stretched into the liquid storage cylinder 211 of pump head core 207；The preceding pump head 201
Junction between rear pump head 202 is provided with O-ring 223.
First sealing ring 217, the second sealing ring 218 and pad 219 can be such that the end of plunger 215 stretches into liquid storage cylinder 211,
Liquid storage cylinder 211 can also be sealed, prevent liquid leakage, lifting liquid transmit to stability；Sealing gasket 220 can be to rear pump
First 202 perforation is sealed, and lifts the sealing of perforation；O-ring 223 can further to preceding pump head 201 and rear pump head 202 it
Between junction sealed, lift-off seal.
In above-described embodiment, the pump head core 207, upper valve base 208, lower valve base 209, plunger 215 are made of stainless steel,
And the plunger 215 is handled by artificial corundum；First sealing ring 217, the second sealing ring 218 and O-ring 223 use Teflon
Imperial material is made.
Pump head core 207, upper valve base 208, lower valve base 209, plunger 215 are made of stainless steel, the first sealing ring 217,
Two sealing rings 218 and O-ring 223 are made of Teflon material, and Neng Shi pump housings mechanism 1 is high pressure resistant and corrosion-resistant；Post
Plug 215 is handled by artificial corundum, improves wearability.
In above-described embodiment, the upper valve base 208 of the first transfusion mechanism 205 and the upper valve base of the described second transfusion mechanism
208 are connected by upper connecting tube 206, and the upper valve base 208 of the transfusion mechanism of the first transfusion mechanism 205 and second passes through hollow spiral shell
Bolt 221 and pressure ring 222 are fixedly connected with upper connecting tube 206, and liquid is accessed by the lower valve base 209 of the described first transfusion mechanism 205.
Upper connecting tube 206 is fixedly connected on to the upper valve base of the first transfusion mechanism 205 by hollow bolt 221 and pressure ring 222
208 with described second transfusion mechanism upper valve base 208, lifted connection stability.
In above-described embodiment, as shown in Figure 7 and Figure 8, the pressure that pressure measurement is carried out to liquid is provided with the side wall of the cabinet 3
Force sensor 4, the pressure sensor device 4 is connected with the lower valve base 209 of the described second transfusion mechanism by lower linking tube 401,
The dump valve that cascading water is carried out to liquid is provided with the pressure sensor device 4.
Pressure sensor device 4 is easy to carry out pressure sensitive to the liquid that pump head mechanism 2 is exported, and is easy to user to understand liquid in time
The pressure of body, can also carry out cascading water to the liquid of transmission in pressure sensor device 4 by dump valve, lift convenience.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. transmission component, it is characterised in that：Including power transmission shaft (105), the first cam (106), the second cam (107), first axle
Hold and be set with straight pin (111) on (108), second bearing (109) and big belt wheel (110), the power transmission shaft (105)；Described
One cam (106) and the second cam (107) fixed cover (210) on power transmission shaft (105), first cam (106) and
Second cam (107) is respectively at the two ends of the straight pin (111)；The clutch shaft bearing (108) and second bearing (109) are
It is sleeved on power transmission shaft (105), the clutch shaft bearing (108) is in the one end of the first cam (106) away from straight pin (111),
The second bearing (109) is in the one end of the second cam (107) away from straight pin (111)；Big belt wheel (110) fixed cover
(210) on the power transmission shaft (105), and the side away from the second cam (107) in second bearing (109)；It is described to pass
Moving axis (105) is also set with split washer (112) and axle pad piece (219), the split washer (112) and axle pad piece (219) place
In side of the clutch shaft bearing (108) away from the first cam (106)；The power transmission shaft (105) drives the first cam (106) and second
Cam (107) is rotated.
2. transmission component according to claim 1, it is characterised in that：First cam (106) and the second cam (107)
Outline curved section be spiral involute, and lift angle, the backhaul angle of the first cam (106) and the second cam (107)
Degree is 140 °, and the first cam (106) and the second cam (107) angle differ 140 °, the upper lift of first cam (106)
It is twice of lift on the second cam (107).
3. pump housing mechanism, it is characterised in that：Including transmission component (101), the DC servo motor described in claim 1 or 2
(102) and pump case (103), the DC servo motor (102) is placed in the side of the pump case (103), the pump case
(103) it is fixedly connected by connecting plate with DC servo motor (102)；The transmission component (101) is placed in pump case (103)
It is interior, and its big belt wheel (110) is in the outside of pump case (103)；The output shaft and transmission group of the DC servo motor (102)
The big belt wheel (110) of part (101) is connected by timing belt；The transmission component (101) passes through clutch shaft bearing (108) and the second axle
The inwall that (109) are held with pump case (103) is connected；Two sliding blocks (104) are provided with the pump case (103), described in two
Sliding block (104) corresponds the side in the first cam (106) and the second cam (107), first cam (106) respectively
Drive its corresponding sliding block (104) mobile respectively with the second cam (107).
4. high pressure pump, it is characterised in that：Including the pump housing mechanism (1) described in claim 3, pump head mechanism (2) and cabinet
(3), the pump housing mechanism (1) is placed in the cabinet (3), and the pump head mechanism (2) is placed in the side of the cabinet (3), institute
State pump housing mechanism (1) to be connected with pump head mechanism (2), the pump case (103) of the correspondence pump housing mechanism (1) in the cabinet (3)
Both sides be provided with baffle plate (301), the lower end of cabinet (3) the correspondence pump case (103) is provided with beam (302).
5. high pressure pump according to claim 4, it is characterised in that：The pump head mechanism (2) includes being provided with inner chamber
Preceding pump head (201), be provided with the rear pump head (202) and the fixed column (203) in hollow form of perforation, the preceding pump head (201),
Pump head (202) and fixed column (203) are sequentially connected afterwards, and the one end of the fixed column (203) away from the rear pump head (202) is fixed
It is provided with the stator (204) of tape punching；The combination of the preceding pump head (201), rear pump head (202) and fixed column (203) composition
It is provided with first transfusion mechanism (205) arranged side by side and the second transfusion mechanism in vivo, described first infuses mechanism (205) and second defeated
Liquid mechanism connects one to one through two sliding blocks (104) of the stator (204) respectively with pump housing mechanism (1)；Described first is defeated
Liquid mechanism (205) is connected with the second transfusion mechanism by upper connecting tube (206).
6. high pressure pump according to claim 5, it is characterised in that：The first transfusion mechanism (205) and second defeated
Liquid mechanism structure is consistent, including pump head core (207), upper valve base (208), lower valve base (209) and fixed cover (210), the pump
Head core (207) is fixed in front pump head (201), and the pump head core (207) is close to the rear pump head (202), the pump head core
(207) liquid storage cylinder (211) is provided with, the upper valve base (208) is placed in the upper end of preceding pump head (201), and its underpart is embedding downwards
Enter and connected in preceding pump head (201) with the liquid storage cylinder (211) in pump head core (207)；The lower valve base (209) is placed in preceding pump head
(201) connected in lower end, and the upward embedded preceding pump head (201) in its top with the liquid storage cylinder (211) in pump head core (207)；Institute
State in upper valve base (208) and lower valve base (209) and be provided with check valve (212)；The fixed cover (210) is in fixed column
(203) in；The spring (213) in compression shape is set with the fixed cover (210), after one end of the spring (213) is stretched into
It is connected in pump head (202) by tabletting (214) with the inwall of rear pump head (202), the other end is close to the outer of the fixed cover (210)
Ring, the spring (213) compresses the fixed cover (210) and is close to stator (204)；Post is provided with the fixed cover (210)
Fill in (215), the one end of the plunger (215) stretches into pump head core (207) through tabletting (214) and the perforation of rear pump head (202)
Liquid storage cylinder (211) in, its other end is connected through stator (204) with sliding block (104)；Rear pump head (202) correspondence
Its upper end perforated is provided with rear washing pipe (216), and the rear washing pipe (216) connects with the perforation of rear pump head (202).
7. high pressure pump according to claim 6, it is characterised in that：The pump head core (207) is close to rear pump head (202)
Place is fixedly installed the first sealing ring (217), the second sealing ring (218) and pad (219) successively；The rear pump head (202)
Set in perforation and be fixed with sealing gasket (220), the sealing gasket (220) is close to the tabletting (214), the plunger (215)
End passes through tabletting (214), sealing gasket (220), pad (219), the second sealing ring (218) and the first sealing ring (217) successively
In the liquid storage cylinder (211) for stretching into pump head core (207)；Junction between the preceding pump head (201) and rear pump head (202) is provided with
O-ring (223).
8. high pressure pump according to claim 7, it is characterised in that：The pump head core (207), upper valve base (208), under
Valve seat (209), plunger (215) are made of stainless steel, and the plunger (215) is handled by artificial corundum；First sealing ring
(217), the second sealing ring (218) and O-ring (223) are made of Teflon material.
9. high pressure pump according to claim 8, it is characterised in that：The upper valve base of the first transfusion mechanism (205)
(208) upper valve base (208) with the described second transfusion mechanism is connected by upper connecting tube (206), the first transfusion mechanism (205)
Pass through hollow bolt (221) and pressure ring (222) and the fixed company of upper connecting tube (206) with the upper valve base (208) of the second transfusion mechanism
Connect, liquid is accessed by the lower valve base (209) of the described first transfusion mechanism (205).
10. the high pressure pump according to any one of claim 6 to 9, it is characterised in that：On the side wall of the cabinet (3)
It is provided with the pressure sensor device (4) that pressure measurement is carried out to liquid, the pressure sensor device (4) and the described second transfusion mechanism
Lower valve base (209) is connected by lower linking tube (401), is provided with the pressure sensor device (4) and liquid progress cascading water is put
Rush down valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710463714.XA CN107165998A (en) | 2017-06-19 | 2017-06-19 | Transmission component, pump housing mechanism and high pressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710463714.XA CN107165998A (en) | 2017-06-19 | 2017-06-19 | Transmission component, pump housing mechanism and high pressure pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107165998A true CN107165998A (en) | 2017-09-15 |
Family
ID=59818817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710463714.XA Pending CN107165998A (en) | 2017-06-19 | 2017-06-19 | Transmission component, pump housing mechanism and high pressure pump |
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| Country | Link |
|---|---|
| CN (1) | CN107165998A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110327660A (en) * | 2019-07-23 | 2019-10-15 | 汕头大学 | A kind of dip-adjustable type counter-current chromatograph drive mechanism |
| CN110425762A (en) * | 2019-08-01 | 2019-11-08 | 武汉高芯科技有限公司 | Sterlin refrigerator |
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| CN102062071A (en) * | 2010-10-25 | 2011-05-18 | 江苏同济分析仪器有限公司 | Liquid chromatography high-pressure series-wound cam pump |
| CN102094777A (en) * | 2011-01-27 | 2011-06-15 | 北京清博华科技有限公司 | Plunger pump for preparing liquid chromatographic column |
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| CN206785961U (en) * | 2017-06-19 | 2017-12-22 | 北京秦方科技有限公司 | Transmission component, pump housing mechanism and high pressure pump |
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| JPH07310663A (en) * | 1994-05-16 | 1995-11-28 | Hitachi Ltd | Liquid feed pump |
| CN102062071A (en) * | 2010-10-25 | 2011-05-18 | 江苏同济分析仪器有限公司 | Liquid chromatography high-pressure series-wound cam pump |
| CN102094777A (en) * | 2011-01-27 | 2011-06-15 | 北京清博华科技有限公司 | Plunger pump for preparing liquid chromatographic column |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110327660A (en) * | 2019-07-23 | 2019-10-15 | 汕头大学 | A kind of dip-adjustable type counter-current chromatograph drive mechanism |
| CN110327660B (en) * | 2019-07-23 | 2021-07-13 | 汕头大学 | Transmission structure of counter-current chromatograph with adjustable inclination angle |
| CN110425762A (en) * | 2019-08-01 | 2019-11-08 | 武汉高芯科技有限公司 | Sterlin refrigerator |
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Application publication date: 20170915 |